A new ultra-wideband box-type output window

Abstract

The purpose of the present invention is to provide a novel ultra-wideband box-type output window, which is used to overcome the problem of narrow working bandwidth of the existing box-type output window. The ultra-wideband box-type output window includes a rectangular waveguide, a circular waveguide, and a circular dielectric window sealed and welded in the middle of the circular waveguide, wherein the two ends of the circular waveguide are respectively connected to the rectangular waveguide, and the rectangular waveguide is connected to the middle of the circular waveguide's circular section; It is characterized in that the circular waveguide is a 0-like circular waveguide with a length of 0.25λ, where λ is the wavelength of the TE11 waveguide. The ultra-wideband box-type output window of the present invention adopts the mixed mode transmission of TE11 and TM11, effectively widens its working bandwidth to 45%, and effectively avoids the drift of its center frequency point; the type 0 circular waveguide effectively improves the purity of the transmission mode, The transmission characteristic parameters of the box-type output window are further optimized. The box-type output window has compact structure, good airtightness, large power capacity, and still has good transmission performance under a certain processing error, which reduces processing difficulty.

Description

Technical field [0001] The invention belongs to the field of microwave electric vacuum devices, and relates to an output device for microwave vacuum tubes, in particular to a novel ultra-wideband box-type output window. Background technique [0002] A microwave electric vacuum device is a device that converts the energy carried by moving electrons in a vacuum into microwave energy. The electron gun generates an electron beam, which interacts with a high-frequency field in a vacuum environment to convert the kinetic energy of the electron into high-frequency energy. In order to ensure the vacuum environment of the device, windows must be used to isolate the external atmosphere from the high vacuum state in the microwave tube. [0003] High-power output window is a key component of high-power microwave electric vacuum devices, accelerators and other high-power microwave electronic systems, and its quality often determines the success or failure of microwave device development. Ther...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a novel ultra-wideband box-type output window, which is used to overcome the problem that the existing box-type output window is relatively narrow in operating bandwidth

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